I think by now it's generally accepted that if you want to really nail "that sound" as closely as possible, you really need to invest in the right gear (Vox; TVS3 etc). However, to get the very best out of an expensive setup, should we be be adding one (or more!) of these into the setup? https://www.futureshop.co.uk/quantum-science-audio-red-black-high-end-uk-13a-fuse.
I'm going to go out on a limb here and say "no"
Cliff